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公开(公告)号:CA1095198A
公开(公告)日:1981-02-03
申请号:CA285950
申请日:1977-09-01
Applicant: HOECHST AG
Inventor: FISCHER JOHANN P , CAVAGNA FRIEDRICH , DUCH EDUARD , MUCK KARL-FRIEDRICH
Abstract: PROCESS FOR PREPARING A POLY(METH)ACRYLIC ACID ESTER HAVING A HIGH ISOTAXY AND A NARROW MOLECULAR WEIGHT DISTRIBUTION ( HOE 76/F 214 ) of the disclosure: Esters of the (meth)acrylic acid may be polymerized with the aid of free radical forming or ionically effective initiators. The stereospecificy of the polymers may be influenced by the selection of specific initiators; magnesium-organic compounds are suitable for the synthesis of isotactic polymers. Poly(meth) acrylic acid esters having a high isotaxy and a narrow molecular weight distribution (polydispersity) are obtained with the aid of substituted phenylmagnesium halides. They are suitable as gauge and as test substances.
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公开(公告)号:PT99451A
公开(公告)日:1992-09-30
申请号:PT9945191
申请日:1991-11-07
Applicant: HOECHST AG
Inventor: FLEISCHER DIETRICH , MUCK KARL-FRIEDRICH , REUSCHEL GERHARD
Abstract: Trioxane can be obtained using a minimum of energy when acetal polymers are degraded in the presence of water and an acidic catalyst. The process contributes to the disposal of waste and the protection of the environment.
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公开(公告)号:AU6944774A
公开(公告)日:1975-12-04
申请号:AU6944774
申请日:1974-05-28
Applicant: HOECHST AG
Inventor: MUCK KARL-FRIEDRICH , PASCHALIS STRATOS , KERN RUDOLF
Abstract: A process and device for determining a hormone in a liquid such as blood wherein measured amounts of the liquid to be tested, of a radioactively-labelled hormone, and of a hormone-binding protein or antibody, all present in a measuring vial, are contacted with an adsorbing vial formed from a mixture of a thermoplastic resin and an ion exchange resin for adsorbing unbound hormone, and the residual radioactivity of the liquid mixture is then measured after draining back into said measuring vial.
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公开(公告)号:BR9603115A
公开(公告)日:1998-05-05
申请号:BR9603115
申请日:1996-07-17
Applicant: HOECHST AG
Inventor: SCHNABEL DIETER , RICHTER PETER , REISS MONIKA , MUCK KARL-FRIEDRICH , WLOCH HUBERT , HIERHOLZER BERNHARD , SCHNABEL HANS-DIETMAR , ARNOLD DIETER
IPC: A01N43/32 , C07D323/06
Abstract: In process and assembly to separate trioxane from a mixture of liquids also containing water and formaldehyde, the novelty is that the mixture is first distilled at low pressure and the resulting distillate is then distilled again at a higher pressure to produce trioxane as the sump residue. The lower pressure and the higher pressure are in the range 0.1 to 20 bar (absolute), pref. approx. 0.5 bar for the lower pressure and approx. 6 bar for the higher pressure. Further claimed is that the trioxane is subsequently used as a disinfectant or for the production of polyoxymethylenes or polyvalent alcohols. A suitable assembly incorporates two distillation columns linked in series in which the head of the first is linked to the central section of the second, and the head of the second column is linked to the central section of the first.
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公开(公告)号:CA1125774A
公开(公告)日:1982-06-15
申请号:CA341491
申请日:1979-12-07
Applicant: HOECHST AG
Inventor: MUCK KARL-FRIEDRICH , SEXTRO GUENTER , BURG KARLHEINZ
IPC: C07D317/12 , C07D323/06
Abstract: HOE 78/F 266 PROCESS FOR THE CONTINUOUS MANUFACTURE OF TRIOXAN of the disclosure: The invention provides a process for the continuous manufacture of trioxan, optionally together with cyclic formals, from aqueous formaldehyde solutions in a circulation reactor with evaporator, the vapor amount leaving the system being in the range of from 0.1 to 4 %. The process of the invention allows to attain especially high space/time yields.
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公开(公告)号:CA988241A
公开(公告)日:1976-04-27
申请号:CA150523
申请日:1972-08-30
Applicant: HOECHST AG
Inventor: CHERDRON HARALD , FISCHER EDGAR , MUCK KARL-FRIEDRICH
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公开(公告)号:MX9101959A
公开(公告)日:1992-06-01
申请号:MX9101959
申请日:1991-11-06
Applicant: HOECHST AG
Inventor: MUCK KARL-FRIEDRICH , REUSCHEL GERHARD , FLEISCHER DIETRICH
IPC: B01J27/02 , B01J27/16 , B01J31/02 , B01J31/10 , C07B61/00 , C07D323/06 , C07D323/00
Abstract: Trioxane can be obtained using a minimum of energy when acetal polymers are degraded in the presence of water and an acidic catalyst. The process contributes to the disposal of waste and the protection of the environment.
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公开(公告)号:CA1236842A
公开(公告)日:1988-05-17
申请号:CA483498
申请日:1985-06-07
Applicant: HOECHST AG
Inventor: BRAUN GERO , BURG KARLHEINZ , MUCK KARL-FRIEDRICH
IPC: B01D11/04 , C07B63/00 , C07D323/06 , C08G2/08
Abstract: of the disclosure: The invention relates to a process for obtaining trioxane from aqueous solutions by high-pressure extraction using an extracting agent which is in the form either of a gas in the supercritical state or of a liquid gas. An intermediate separation is advantageous, especially in the former case. The trioxane can be obtained in high concentration and with a saving of energy by the process according to the invention.
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公开(公告)号:SG64352A1
公开(公告)日:1999-04-27
申请号:SG1996007034
申请日:1996-04-01
Applicant: HOECHST AG
Inventor: ARNOLD DIETER , HEIRHOLZER BERNHARD , WLOCH HUBERT , MUCK KARL-FRIEDRICH
IPC: C07D323/00 , B01J19/24 , C07C41/48 , C07C43/303 , C07D323/06 , B01J14/00
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公开(公告)号:MX9602849A
公开(公告)日:1998-04-30
申请号:MX9602849
申请日:1996-07-18
Applicant: HOECHST AG
Inventor: ARNOLD DIETER , HIERHOLZER BERNHARD , MUCK KARL-FRIEDRICH , REISS MONIKA , RICHTER PETER , SCHNABEL HANS-DIETMAR , WLOCH HUBERT
IPC: A01N43/32 , C07D323/06
Abstract: La presente invencion se refiere a un procedimiento para separar trioxano de una mezcla líquida que contiene trioxano, agua y formaldehído, caracterizado porque la mezcla líquida se destila en una primera etapa de destilacion a baja presion, el destilado resultante se destila en una segunda eta de destilacion a una presion mayor y el trioxano se recoge como producto de cola.
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